name: Multi-Env Deploy

on:
  push:
    branches:
      - main
      - develop

env:
  PROJECT_ID: deployments-485614
  REGION: europe-west1
  REPO_NAME: gitea-repo
  CLUSTER_NAME: gitea-cluster
  CLUSTER_ZONE: europe-west1-b
  APP_NAME: varco  # change this to your app name
  PROD_DOMAIN: prod.bytebuilder.it
  STAGING_DOMAIN: demo.bytebuilder.it

jobs:
  build-and-deploy:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v3

      - name: Set Environment Variables
        run: |
          if [[ "${{ gitea.ref }}" == "refs/heads/main" ]]; then
            echo "TARGET_NS=default" >> $GITHUB_ENV
            echo "BASE_DOMAIN=${{ env.PROD_DOMAIN }}" >> $GITHUB_ENV
          else
            echo "TARGET_NS=staging" >> $GITHUB_ENV
            echo "BASE_DOMAIN=${{ env.STAGING_DOMAIN }}" >> $GITHUB_ENV
          fi

      - name: Google Auth
        uses: google-github-actions/auth@v1
        with:
          credentials_json: ${{ secrets.GCP_SA_KEY }}

      - name: Set up Cloud SDK
        uses: google-github-actions/setup-gcloud@v1
        with:
          install_components: 'gke-gcloud-auth-plugin,kubectl'

      - name: Docker Auth
        run: gcloud auth configure-docker ${{ env.REGION }}-docker.pkg.dev

      - name: Build and Push
        run: |
          # Usiamo il namespace come parte del tag per evitare confusione
          IMAGE_TAG=${{ env.REGION }}-docker.pkg.dev/${{ env.PROJECT_ID }}/${{ env.REPO_NAME }}/${{ env.APP_NAME }}:${{ env.TARGET_NS }}-${{ gitea.sha }}
          
          # Salviamo il nome completo per il passaggio successivo
          echo "FULL_IMAGE_NAME=$IMAGE_TAG" >> $GITHUB_ENV
          
          docker build -t $IMAGE_TAG .
          docker push $IMAGE_TAG

      - name: Deploy to GKE
        run: |
          gcloud container clusters get-credentials ${{ env.CLUSTER_NAME }} --zone ${{ env.CLUSTER_ZONE }}
          sudo apt-get update && sudo apt-get install -y gettext-base

          # Sostituisce APP_NAME, BASE_DOMAIN e FULL_IMAGE_NAME nel template
          envsubst < k8s/deployment.yaml > final-deploy.yaml
          
          echo "Deploying to namespace: ${{ env.TARGET_NS }}"
          
          # 3. APPLICA AL NAMESPACE GIUSTO
          kubectl apply -f final-deploy.yaml -n ${{ env.TARGET_NS }}